Not totally up on 74 but I'm sure it was about the same as 77-78. Like stated before Adventurer Sport was the top of the line in 74. Not sure on 75 but by 76 top of the line was Adventurer SE. Custom was the base model and Adventurer was the middle trim level. 77-78 Adventurer SE was special seat material, door panels, wood grain dash, emblems and several other things that really don't matter like dual horns, power steering, oil pressure gauge, AM FM radio etc..... Pretty much all models could have been ordered with the exterior trim, monotone paint and two tone in 3 different styles. So a customer could have been speced out with all the trim and two tone paint on a Custom but they usually were not. Hope that helps you